Water heating Water heating Water heating of a country house Water heating of the house country house Heating house Heating

Designs of heating devices 3

the Concrete heating panel 

a Fig. 35. The concrete heating panel

Devices weld from pipes Du=32-100 mm located from each other on distance, by 50 mm exceeding their diameter that reduces a mutual irradiation and accordingly increases teplootdachu in a premise. Gladkotrubnye devices possess the highest factor of a heat transfer, them pylesobirajushchaja the surface is insignificant also they are easily cleared.

At the same time gladkotrubnye devices are heavy and bulky , take a lot of place, increase the steel expense in heating systems, have unattractive appearance. Them apply in rare instances when devices of other kinds (for example, for heating of hothouses cannot be used).

Characteristics gladkotrubnyh registers are resulted in tab. 23.

Konvektor is a device konvektivnogo type , consisting of two elements - a ridge heater and a casing (fig. 37). The casing decorates a heater and promotes heat transfer increase thanks to increase in mobility of air at a heater surface. Konvektor with a casing transfers in a premise konvektsiej to 90-95% of all thermal stream (tab. 24). The device in which casing functions carries out orebrenie a heater, name konvektorom without a casing. A heater carry out from a steel, pig-iron, aluminium and other metals, a casing - from sheet materials (a steel, asbestotsementa, etc.)

Forms of connection of steel pipes in gladkotrubnye heating devices

a Fig. 36. Forms of connection of steel pipes in gladkotrubnye heating devices
And - zmeevikovaja the form; - the register form; 1 - a thread; 2 - a column

Table 23.

the Surface of heating of a smooth pipe of the register of 1 m, ekm

Number of numbers of pipes on a vertical Diameter of a pipe d, mm
25 32 40 50 70 80 100 125 150
1 number 0,179 0,157 0,22 0,29 0,372 0,436 0,529 0,651 0,779
2 numbers and more 0,165 0,131 0,18 0,238 0,305 0,357 0,434 0,558 0,668

Schemes konvektorov 

a Fig. 37. Schemes konvektorov
And - with a casing; - without a casing; 1 - a heating element; 2 - a casing; 3 - the air valve; 4 - orebrenie pipes

Konvektory possess rather low factor of a heat transfer . Nevertheless they find wide application. It speaks simplicity of manufacturing, installation and operation, and also small metal consumption.

Table 24.

Dependence of a heat transfer konvektorov with a casing from casing height (h to )

casing Height h, mm 0 (without a casing) 250 400 600
the Relative heat transfer,% 100 115120 130 140

The Basic technical characteristics konvektorov are resulted in tab. 25.

Table 25.

the Technical characteristics konvektorov

Type konvektora

the Surface of heating of one konvektora

Length And, m

F, m 2

Fэк, ekm

1

2

3

4

Plintusnye steel

15КП-0,5

0,37

0,25

450

15КП-0,75

0,55

0,34

700

15КП-1

0,73

0,46

950

15КП-1,25

0,95

0,6

1200

15КП-1,5

1,14

0,7

1450

15КП-1,75

1,37

0,86

1700

20КП-0,5

0,49

0,28

480

20КП-0,75

0,68

0,42

700

20КП-1

0,91

0,57

950

20КП-1,25

1,15

0,72

1200

20КП-1,5

1,43

0,89

1450

20КП~1,75

1,67

1,04

1700

tab. 25 Continuation

1

2

3

4

Steel two-trumpet "¤ЁюуЁхёё-15"

№1

0,88

0,5

400

№2

1,11

0,63

500

№3

1,32

0,75

600

№4

1,55

0,88

700

№5

1,77

1

800

№6

1,99

1,13

900

№7

2,21

1,25

1000

№8

2,43

1,38

1100

№9

2,65

1,5

1200

 

"¤ЁюуЁхёё20"

 

№1

0,83

0,48

400

№2

1,1

0,6

500

№3

1,32

0,72

600

№4

1,54

0,84

700

№5

1,76

0,96

800

№6

1,98

1,08

900

№7

2,2

1,2

1000

№8

2,42

1,32

1100

№9

2,64

1,45

1200

"+ъъюЁф" single-row

А-12

-

0,6

460

А-16

-

0,8

620

А-20

-

1

780

А-24

-

1,2

940

А-28

-

1,4

1100

А-32

-

1,6

1260

А-36

-

1,8

1420

А-40

-

2

1580

"+ъъюЁф" dvuhrjadnyj

2А-12

-

1,105

460

2А-16

-

1,47

620

2А-20

-

1,84

780

tab. 25 Continuation

1

2

3

4

2А-24

-

2,21

940

2А-28

-

2,58

1100

2 А-32

-

2,94

1260

2А-36

-

3,31

1420

2А-40

-

3,68

1580

"-юь¶юЁ=" two-trumpet

Wall

Floor

 

Nn-1

-

-

0,76

710

Nn-2

-

-

1,27

1110

Nn-3

-

-

1,78

1510

-

Н-4

-

0,81

710

Nn-5

Н-5

-

0,985

710

Nn-6

Н-6

-

1,24

710

-

Н-7

-

1,39

1110

Nn-8

Н-8

-

1,79

1110

Nn-9

Н-9

-

2,15

1110

-

Н-10

-

1,9

1510

Nn-11

Н-11

-

2,3

1510

Nn-12

Н-12

-

2,87

1510

"-юь¶юЁ=" four-trumpet

Wall

Floor

 

Nn-13

Н-13

-

1,53

710

Nn-14

Н-14

-

2,55

1110

Nn-15

Н-15

-

3,57

1510

Plintusnye pig-iron

ЛТ-100,3

0,27

0,265

295

ЛТ-100,6

0,54

0,53

601

the Note: 1 . At mnogorjadnoj to installation plintusnyh konvektorov KP the amendment on a surface of heating depending on number of numbers on a vertical and a horizontal is entered: at dvuhrjadnoj to installation on a vertical 0,97, three-row - 0,94, chetyrehrjadnoj - 0,91; for two numbers across the amendment 0,97.

the Note: 2 . Indicators of trailer and models through passage konvektorov are identical. Checkpoints konvektory have an index And (for example, Nn-5A, Н-7А).

The Ridge pipe name the device konvektivnogo the type, representing flantsevuju the pig-iron pipe which external surface is covered by in common cast thin edges (fig. 38).

The Area of an external surface of a ridge pipe many times over more than the area of a surface of a smooth pipe of the same diameter and length. It gives to the heating device special compactness. Besides, the lowered temperature of a surface of edges at use of the high-temperature heat-carrier, comparative simplicity of manufacturing and low cost cause application of this ineffective in teplotehnicheskom the relation, the heavy device. Unmodern appearance, small mechanical durability of edges and difficulty of clearing of a dust concern lacks of ridge pipes also. Ridge pipes apply as a rule in auxiliary premises (boiler-houses, warehouse, garages etc.). The industry lets out round ridge pig-iron pipes in length of 1-2 m. Them establish horizontally in some circles and connect on zmeevikovoj to the scheme on bolts to the help "ърырёхщ" flantsevyh pig-iron double taps and counterflanges.

For comparative teplotehnicheskoj characteristics.osnovnyh heating devices in tab. 25 it is resulted relative teplootdacha devices in length of 1,0 m in equal teplogidravlicheskih conditions at use as the heat-carrier - waters (teplootdacha a pig-iron section radiator by depth of 140 mm it is accepted for 100%).

Apparently, high teplootdachej on 1,0 m of length section radiators and konvektory with a casing differ; the least teplootdachu have konvektory without a casing and especially single smooth pipes.

Table 26.

Relative teplootdacha heating devices in length of 1,0 m

the Heating device

Depth of the device, mm

Teplootdacha of the device in length of 1,0 m,%

the Radiator section:

 

type М-140-АО

140

100

type МС-90

90

71,6

the Radiator panel:

 

type РСВ-1-500

18

44,5

type РСГ-1-500

21

52,7

the Smooth pipe:

 

Dу32

42

6,3

Dу100

108

12,8

Konvektor with a casing:

 

type "-юь¶юЁ=-20" (КН20)

160

68,7

type "рш=ь" (КО20)

180

62,5

Konvektor without a casing:

 

type "+ъъюЁф" (KA)

60

30,8

type "¤ЁюуЁхёё-20"

70

30,0

the Ridge pipe

175

44,6

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